©Ijje ^vi&lj Jlatttralt^t. 



Vol. IV. MARCH, 1895. No. 3. 



FURTHER NOTES ON THE FI.ORA OF COUNTY 



DUBININ. 



BY NATHANIKI. COI.GAN, M.R.I. A. 



In compiling the following notes I have endeavoured to 

 select from my memoranda of the past j-ear such items only 

 as appeared likely to be of general interest to County Dublin 

 botanists. Though no ver}^ striking results were obtained, 

 only three more or less critical plants being added to the 

 Count}^ flora in addition to the two already recorded in these 

 pages (Vol. III., p. 202), the outcome of the year's work 

 cannot be considered altogether disappointing. A large 

 proportion of the rarer plants of the county have been 

 extended to new stations, many of the older records have been 

 verified, and not a few of those curious absences of common 

 vSpecies from certain districts w^hich one is tempted to look 

 upon as freaks of distribution have been detected or confirmed. 

 The difficulty of proving a negative is admittedly so great 

 that it seems wiser, for the present, to keep an open mind 

 with regard to these conspicuous absences, and to defer any 

 more particular mention of them until the systematic survey 

 of the county flora shall have been fully carried out. 



These Further Notes then will contain nothing more than a 

 selection from my memoranda of^the year of some items 

 falling under the two headings : — I. Plants not previously 

 recorded for County Dublin, and II. Rarer County Dublin 

 Plants observed in new Stations. 



I. PLANTS NOT PREVIOUSLY RECORDED FOR COUNTY 



DUBLIN. 



Callitrlche hamulata, Kuetz. — (i). Quarry pools near Hollywood, 

 Naul Hills, June, 1894. (2.) Pools at Loughlinstown, August, 1894. 

 Apparently rare in the county. 



Lamium intermedium, Fries. — Abundant in sandy potato fields 

 near Rush harbour, September, 1S94. 



A 



